Abstract: A link attachment to a torque wrench providing coaxial action in the reaction turning forces in opposite directions at equal torque, the link attachment has a housing, a ratchet mechanism including a ratchet engageable with a fastener and a drive plate turning the ratchet, a first connecting structure for connecting the housing to a part of the torque wrench providing a reaction turning force and a second connecting structure for connecting a part of the torque wrench providing an action turning force for the at least one lever drive plate, so that a turning action of the torque wrench is converted into a linear action applied to the at least lever drive plate so as to turn the at least one lever drive plate and thereby to turn a fastener by the ratchet, while abutting against a nearby stationary object with the housing to stop the torque wrench from turning around the fastener to be tightened or loosened.

Abstract: A power tool has a housing having a drive portion for turning a fastener to tighten or loosen the fastener, the drive portion having two opposite sides spaced from one another in one direction and two connecting elements spaced from one another in another direction which is transverse to the one direction, the connecting elements including a first connecting element to connect with a fastener to be turned and a second connecting element to connect with an adjacent fastener so as to stop the power tool from turning around the fastener to be turned. The connecting elements being movable in the one directions to a first position wherein both elements are on one side of the drive portion and to a second position wherein both elements are on the opposite side of the drive portion and being fixedly secured in the two positions.

Abstract: A link attachment to a torque wrench providing coaxial action in the reaction turning forces in opposite directions at equal torque, the link attachment has a housing, a ratchet mechanism including a ratchet engageable with a fastener and a drive plate turning the ratchet, a first connecting structure for connecting the housing to a part of the torque wrench providing a reaction turning force and a second connecting structure for connecting a part of the torque wrench providing an action turning force for the at least one lever drive plate, so that a turning action of the torque wrench is converted into a linear action applied to the at least lever drive plate so as to turn the at least one lever drive plate and thereby to turn a fastener by the ratchet, while abutting against a nearby stationary object with the housing to stop the torque wrench from turning around the fastener to be tightened or loosened.

Abstract: A power tool has a housing having a drive portion for turning a fastener to tighten or loosen the fastener, the drive portion having two opposite sides spaced from one another in one direction and two connecting element spaced from one another in another direction which is transverse to the one direction, the connecting elements including a first connecting element to connect with a fastener to be turned and a second connecting element to connect with an adjacent fastener so as to stop the power tool from turning around the fastener to be turned, so that during tightening of the first mentioned fastener said first connecting element engages said first mentioned fastener on one of the sides of the drive portion while the second connecting element engages the adjacent fastener also on the one side of the drive portion, and during tightening of the adjacent fastener the first connecting element engages the adjacent fastener on the other side of the drive portion while the second connecting element engage the fir

Abstract: For elongating and relaxing a stud arranged in an object, the stud of a fastener part is engaged by a tool part of a power tool, and the fastener part is operated by a pawl-ratchet mechanism including a pawl provided in the tool part and a ratchet provided in the fastener part and turnable by the pawl in a ratcheting fashion.

Abstract: For moving an element relative to an object a plurality of screw members having polygonal heads are screwed in threaded openings on the element and arranged around an axis so as to be circumferentially spaced from one another, an action drive and a reaction drive arranged coaxially to the axis and with one another and turnable in opposite directions apply opposite turning forces to the screw members on an outer circumference and on an inner circumference correspondingly so as to turn the screw members in one and the same direction to thereby move the element in an axial direction, and a plurality of transmitting members engage by first engaging formations both with the action drive and the reaction drive turnable in the opposite directions so as to be turned in one and the same direction and engage by second engaging formations with the polygonal heads of the screw members for transmitting the turning of the transmitting members in one and the same direction into turning of the screw members in one and the sa